id:A117125 - OEIS Search Results

Search: id:A117125

Displaying 1-1 of 1 results found.

page 1

Positive integers that can be expressed as the difference between a factorial and a double factorial.

+0
1

0, 1, 3, 4, 5, 9, 15, 16, 21, 22, 23, 72, 105, 112, 117, 118, 119, 336, 615, 672, 705, 712, 717, 718, 719, 1200, 4095, 4656, 4935, 4992, 5025, 5032, 5037, 5038, 5039 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`n! - m!! being n! > m!!`
	EXAMPLE	`117 = 5! - 3!!` `4992 = 7! - 6!!`
	CROSSREFS	`Cf. A110903, A111300.` `Sequence in context: A136259 A099560 A050161 this_sequence A000692 A080552 A056797` `Adjacent sequences: A117122 A117123 A117124 this_sequence A117126 A117127 A117128`
	KEYWORD	`nonn`
	AUTHOR	`Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Apr 20 2006`

page 1

Search completed in 0.002 seconds

Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

AT&T Labs Research